The LB-1 Rechargeable 1600mAh Lithium-Ion Battery from Rode is designed to be used with the VideoMic Pro+ and Performer Kit TX-M2 microphones. On a full charge, this battery supplies 10 hours of uninterrupted power for the Performer TX-M2, and 100 hours of continuous charge to the VideoMic Pro+. You can recharge the LB-1 on the device via a micro-USB port or via a RS-1 Recharge Station (available separately). Full charge is achieved in up to three hours.